#include<stdio.h>

int main(){
    char *a =  "abc";
    while(*a != '\0'){
        printf("%c\n",*a);
        a++;
    }
    /*
    printf("%x\n",a);
    printf("%x\n",&a);
    printf("%d\n",++a);
    printf("%x\n",&a + 1);
    */
    return 0;
}
